Determining discontinuous reception communication parameters for sidelink communications

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may determine, based at least in part on an indication of communication frequency between the first UE and a second UE, a value for a discontinuous reception (DRX) parameter. The UE may transmit, to the second UE, DRX configuration information, the DRX configuration information indicating the value for the DRX parameter. Numerous other aspects are described.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for determiningdiscontinuous reception communication parameters for sidelinkcommunications.

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless network may include a number of base stations (BSs) that cansupport communication for a number of user equipment (UEs). A UE maycommunicate with a BS via the downlink and uplink. The downlink (orforward link) refers to the communication link from the BS to the UE,and the uplink (or reverse link) refers to the communication link fromthe UE to the BS. As will be described in more detail herein, a BS maybe referred to as a Node B, a gNB, an access point (AP), a radio head, atransmit receive point (TRP), a New Radio (NR) BS, a 5G Node B, or thelike.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. NR, which may also be referred to as5G, is a set of enhancements to the LTE mobile standard promulgated bythe 3GPP. NR is designed to better support mobile broadband Internetaccess by improving spectral efficiency, lowering costs, improvingservices, making use of new spectrum, and better integrating with otheropen standards using orthogonal frequency division multiplexing (OFDM)with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDMand/or SC-FDM (e.g., also known as discrete Fourier transform spreadOFDM (DFT-s-OFDM)) on the uplink (UL), as well as supportingbeamforming, multiple-input multiple-output (MIMO) antenna technology,and carrier aggregation. As the demand for mobile broadband accesscontinues to increase, further improvements in LTE, NR, and other radioaccess technologies remain useful.

SUMMARY

In some aspects, a method of wireless communication performed by a firstUE includes determining, based at least in part on an indication ofcommunication frequency between the first UE and a second UE, a valuefor a discontinuous reception (DRX) parameter; and transmitting, to thesecond UE, DRX configuration information, the DRX configurationinformation indicating the value for the DRX parameter.

In some aspects, a method of wireless communication performed by a firstUE includes receiving, from a second UE, DRX configuration information,the DRX configuration information indicating a value for a DRXparameter, and the DRX configuration information indicating a channelbusy ratio (CBR) configuration for the first UE; and configuring DRXusing the DRX configuration information.

In some aspects, a first UE for wireless communication includes amemory; and one or more processors, coupled to the memory, configuredto: determine, based at least in part on an indication of communicationfrequency between the first UE and a second UE, a value for a DRXparameter; and transmit, to the second UE, DRX configurationinformation, the DRX configuration information indicating the value forthe DRX parameter.

In some aspects, a UE for wireless communication includes a memory; andone or more processors, coupled to the memory, configured to: receive,from a second UE, DRX configuration information, the DRX configurationinformation indicating a value for a DRX parameter, and the DRXconfiguration information indicating a CBR configuration for the firstUE; and configure DRX using the DRX configuration information.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a firstUE, cause the UE to: determine, based at least in part on an indicationof communication frequency between the first UE and a second UE, a valuefor a DRX parameter; and transmit, to the second UE, DRX configurationinformation, the DRX configuration information indicating the value forthe DRX parameter.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of an UE,cause the UE to: receive, from a second UE, DRX configurationinformation, the DRX configuration information indicating a value for aDRX parameter, and the DRX configuration information indicating a CBRconfiguration for the first UE; and configure DRX using the DRXconfiguration information.

In some aspects, an apparatus for wireless communication includes meansfor determining, based at least in part on an indication ofcommunication frequency between the first UE and a second UE, a valuefor a DRX parameter; and means for transmitting, to the second UE, DRXconfiguration information, the DRX configuration information indicatingthe value for the DRX parameter.

In some aspects, an apparatus for wireless communication includes meansfor receiving, from a second UE, DRX configuration information, the DRXconfiguration information indicating a value for a DRX parameter, andthe DRX configuration information indicating a CBR configuration for thefirst UE; and means for configuring DRX using the DRX configurationinformation.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, and/or processing system assubstantially described herein with reference to and as illustrated bythe drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

While aspects are described in the present disclosure by illustration tosome examples, those skilled in the art will understand that suchaspects may be implemented in many different arrangements and scenarios.Techniques described herein may be implemented using different platformtypes, devices, systems, shapes, sizes, and/or packaging arrangements.For example, some aspects may be implemented via integrated chipembodiments or other non-module-component based devices (e.g., end-userdevices, vehicles, communication devices, computing devices, industrialequipment, retail/purchasing devices, medical devices, or artificialintelligence-enabled devices). Aspects may be implemented in chip-levelcomponents, modular components, non-modular components, non-chip-levelcomponents, device-level components, or system-level components. Devicesincorporating described aspects and features may include additionalcomponents and features for implementation and practice of claimed anddescribed aspects. For example, transmission and reception of wirelesssignals may include a number of components for analog and digitalpurposes (e.g., hardware components including antenna, radio frequency(RF) chains, power amplifiers, modulators, buffer, processor(s),interleaver, adders, or summers). It is intended that aspects describedherein may be practiced in a wide variety of devices, components,systems, distributed arrangements, or end-user devices of varying size,shape, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example of a wireless network, inaccordance with the present disclosure.

FIG. 2 is a diagram illustrating an example of a base station incommunication with a UE in a wireless network, in accordance with thepresent disclosure.

FIG. 3 is a diagram illustrating an example of discontinuous reception(DRX), in accordance with the present disclosure.

FIG. 4 is a diagram illustrating an example of sidelink communications,in accordance with the present disclosure.

FIG. 5 is a diagram illustrating an example of channel busy ratio (CBR)measurements, in accordance with the present disclosure.

FIGS. 6A-6C are diagrams illustrating an example associated with CBRmeasurements for sidelink communications, in accordance with the presentdisclosure.

FIGS. 7-10 are diagrams illustrating examples associated with sidelinkcommunication parameters for DRX communications, in accordance with thepresent disclosure.

FIGS. 11 and 12 are diagrams illustrating examples associated withdetermining sidelink communication parameters for DRX communications, inaccordance with the present disclosure.

FIGS. 13 and 14 are diagrams illustrating example processes associatedwith determining sidelink communication parameters for DRXcommunications, in accordance with the present disclosure.

FIG. 15 is a block diagram of an example apparatus for wirelesscommunication, in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein, one skilled in the art should appreciate that thescope of the disclosure is intended to cover any aspect of thedisclosure disclosed herein, whether implemented independently of orcombined with any other aspect of the disclosure. For example, anapparatus may be implemented or a method may be practiced using anynumber of the aspects set forth herein. In addition, the scope of thedisclosure is intended to cover such an apparatus or method which ispracticed using other structure, functionality, or structure andfunctionality in addition to or other than the various aspects of thedisclosure set forth herein. It should be understood that any aspect ofthe disclosure disclosed herein may be embodied by one or more elementsof a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with a 5G or New Radio (NR) radio accesstechnology (RAT), aspects of the present disclosure can be applied toother RATs, such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G(e.g., 6G).

FIG. 1 is a diagram illustrating an example of a wireless network 100,in accordance with the present disclosure. The wireless network 100 maybe or may include elements of a 5G (NR) network and/or an LTE network,among other examples. The wireless network 100 may include a number ofbase stations 110 (shown as BS 110 a, BS 110 b, BS 110 c, and BS 110 d)and other network entities. A base station (BS) is an entity thatcommunicates with user equipment (UEs) and may also be referred to as anNR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmitreceive point (TRP), or the like. Each BS may provide communicationcoverage for a particular geographic area. In 3GPP, the term “cell” canrefer to a coverage area of a BS and/or a BS subsystem serving thiscoverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). ABS for a macro cell may bereferred to as a macro BS. ABS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1 , a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in thewireless network 100 through various types of backhaul interfaces, suchas a direct physical connection or a virtual network, using any suitabletransport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1 , a relay BS 110 d may communicate with macro BS 110 a and a UE120 d in order to facilitate communication between BS 110 a and UE 120d. A relay BS may also be referred to as a relay station, a relay basestation, a relay, or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, such as macro BSs, pico BSs, femto BSs, relay BSs, orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, e.g., directly or indirectly via a wireless orwireline backhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, or the like. A UE may be a cellular phone(e.g., a smart phone), a personal digital assistant (PDA), a wirelessmodem, a wireless communication device, a handheld device, a laptopcomputer, a cordless phone, a wireless local loop (WLL) station, atablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook,a medical device or equipment, biometric sensors/devices, wearabledevices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, and/or location tags, that may communicate with a basestation, another device (e.g., remote device), or some other entity. Awireless node may provide, for example, connectivity for or to a network(e.g., a wide area network such as Internet or a cellular network) via awired or wireless communication link. Some UEs may be consideredInternet-of-Things (IoT) devices, and/or may be implemented as NB-IoT(narrowband internet of things) devices. Some UEs may be considered aCustomer Premises Equipment (CPE). UE 120 may be included inside ahousing that houses components of UE 120, such as processor componentsand/or memory components. In some aspects, the processor components andthe memory components may be coupled together. For example, theprocessor components (e.g., one or more processors) and the memorycomponents (e.g., a memory) may be operatively coupled, communicativelycoupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, or the like. A frequency may alsobe referred to as a carrier, a frequency channel, or the like. Eachfrequency may support a single RAT in a given geographic area in orderto avoid interference between wireless networks of different RATs. Insome cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol or avehicle-to-infrastructure (V2I) protocol), and/or a mesh network. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

Devices of wireless network 100 may communicate using theelectromagnetic spectrum, which may be subdivided based on frequency orwavelength into various classes, bands, channels, or the like. Forexample, devices of wireless network 100 may communicate using anoperating band having a first frequency range (FR1), which may span from410 MHz to 7.125 GHz, and/or may communicate using an operating bandhaving a second frequency range (FR2), which may span from 24.25 GHz to52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred toas mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, FR2 isoften referred to as a “millimeter wave” band despite being differentfrom the extremely high frequency (EHF) band (30 GHz-300 GHz) which isidentified by the International Telecommunications Union (ITU) as a“millimeter wave” band. Thus, unless specifically stated otherwise, itshould be understood that the term “sub-6 GHz” or the like, if usedherein, may broadly represent frequencies less than 6 GHz, frequencieswithin FR1, and/or mid-band frequencies (e.g., greater than 7.125 GHz).Similarly, unless specifically stated otherwise, it should be understoodthat the term “millimeter wave” or the like, if used herein, may broadlyrepresent frequencies within the EHF band, frequencies within FR2,and/or mid-band frequencies (e.g., less than 24.25 GHz). It iscontemplated that the frequencies included in FR1 and FR2 may bemodified, and techniques described herein are applicable to thosemodified frequency ranges.

In some aspects, the UE 120 may include a communication manager 140. Asdescribed in more detail elsewhere herein, the communication manager 140may determine, based at least in part on an indication of communicationfrequency between the first UE and a second UE, a value for adiscontinuous reception (DRX) parameter; and transmit, to the second UE,DRX configuration information, the DRX configuration informationindicating the value for the DRX parameter. In some aspects, thecommunication manager 140 may receive, from a second UE, DRXconfiguration information, the DRX configuration information indicatinga value for a DRX parameter, and the DRX configuration informationindicating a CBR configuration for the first UE; and configure DRX usingthe DRX configuration information. Additionally, or alternatively, thecommunication manager 140 may perform one or more other operationsdescribed herein.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1 .

FIG. 2 is a diagram illustrating an example 200 of a base station 110 incommunication with a UE 120 in a wireless network 100, in accordancewith the present disclosure. Base station 110 may be equipped with Tantennas 234 a through 234 t, and UE 120 may be equipped with R antennas252 a through 252 r, where in general T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI)) and control information (e.g.,CQI requests, grants, and/or upper layer signaling) and provide overheadsymbols and control symbols. Transmit processor 220 may also generatereference symbols for reference signals (e.g., a cell-specific referencesignal (CRS) or a demodulation reference signal (DMRS)) andsynchronization signals (e.g., a primary synchronization signal (PSS) ora secondary synchronization signal (SSS)). A transmit (TX)multiple-input multiple-output (MIMO) processor 230 may perform spatialprocessing (e.g., precoding) on the data symbols, the control symbols,the overhead symbols, and/or the reference symbols, if applicable, andmay provide T output symbol streams to T modulators (MODs) 232 a through232 t. Each modulator 232 may process a respective output symbol stream(e.g., for OFDM) to obtain an output sample stream. Each modulator 232may further process (e.g., convert to analog, amplify, filter, andupconvert) the output sample stream to obtain a downlink signal. Tdownlink signals from modulators 232 a through 232 t may be transmittedvia T antennas 234 a through 234 t, respectively.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM) to obtain received symbols. A MIMO detector 256 may obtainreceived symbols from all R demodulators 254 a through 254 r, performMIMO detection on the received symbols if applicable, and providedetected symbols. A receive processor 258 may process (e.g., demodulateand decode) the detected symbols, provide decoded data for UE 120 to adata sink 260, and provide decoded control information and systeminformation to a controller/processor 280. The term“controller/processor” may refer to one or more controllers, one or moreprocessors, or a combination thereof. A channel processor may determinea reference signal received power (RSRP) parameter, a received signalstrength indicator (RSSI) parameter, a reference signal received quality(RSRQ) parameter, and/or a channel quality indicator (CQI) parameter,among other examples. In some aspects, one or more components of UE 120may be included in a housing 284.

Network controller 130 may include communication unit 294,controller/processor 290, and memory 292. Network controller 130 mayinclude, for example, one or more devices in a core network. Networkcontroller 130 may communicate with base station 110 via communicationunit 294.

Antennas (e.g., antennas 234 a through 234 t and/or antennas 252 athrough 252 r) may include, or may be included within, one or moreantenna panels, antenna groups, sets of antenna elements, and/or antennaarrays, among other examples. An antenna panel, an antenna group, a setof antenna elements, and/or an antenna array may include one or moreantenna elements. An antenna panel, an antenna group, a set of antennaelements, and/or an antenna array may include a set of coplanar antennaelements and/or a set of non-coplanar antenna elements. An antennapanel, an antenna group, a set of antenna elements, and/or an antennaarray may include antenna elements within a single housing and/orantenna elements within multiple housings. An antenna panel, an antennagroup, a set of antenna elements, and/or an antenna array may includeone or more antenna elements coupled to one or more transmission and/orreception components, such as one or more components of FIG. 2 .

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports that include RSRP, RSSI, RSRQ, and/or CQI) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In someaspects, a modulator and a demodulator (e.g., MOD/DEMOD 254) of the UE120 may be included in a modem of the UE 120. In some aspects, the UE120 includes a transceiver. The transceiver may include any combinationof antenna(s) 252, modulators and/or demodulators 254, MIMO detector256, receive processor 258, transmit processor 264, and/or TX MIMOprocessor 266. The transceiver may be used by a processor (e.g.,controller/processor 280) and memory 282 to perform aspects of any ofthe methods described herein, for example, as described with referenceto FIGS. 5-14 .

At base station 110, the uplink signals from UE 120 and other UEs may bereceived by antennas 234, processed by demodulators 232, detected by aMIMO detector 236 if applicable, and further processed by a receiveprocessor 238 to obtain decoded data and control information sent by UE120. Receive processor 238 may provide the decoded data to a data sink239 and the decoded control information to controller/processor 240.Base station 110 may include communication unit 244 and communicate tonetwork controller 130 via communication unit 244. Base station 110 mayinclude a scheduler 246 to schedule UEs 120 for downlink and/or uplinkcommunications. In some aspects, a modulator and a demodulator (e.g.,MOD/DEMOD 232) of the base station 110 may be included in a modem of thebase station 110. In some aspects, the base station 110 includes atransceiver. The transceiver may include any combination of antenna(s)234, modulators and/or demodulators 232, MIMO detector 236, receiveprocessor 238, transmit processor 220, and/or TX MIMO processor 230. Thetransceiver may be used by a processor (e.g., controller/processor 240)and memory 242 to perform aspects of any of the methods describedherein, for example, as described with reference to FIGS. 5-14 .

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with determining discontinuous receptioncommunication parameters for sidelink communications, as described inmore detail elsewhere herein. For example, controller/processor 240 ofbase station 110, controller/processor 280 of UE 120, and/or any othercomponent(s) of FIG. 2 may perform or direct operations of, for example,process 1300 of FIG. 13 , process 1400 of FIG. 14 , and/or otherprocesses as described herein. Memories 242 and 282 may store data andprogram codes for base station 110 and UE 120, respectively. In someaspects, memory 242 and/or memory 282 may include a non-transitorycomputer-readable medium storing one or more instructions (e.g., codeand/or program code) for wireless communication. For example, the one ormore instructions, when executed (e.g., directly, or after compiling,converting, and/or interpreting) by one or more processors of the basestation 110 and/or the UE 120, may cause the one or more processors, theUE 120, and/or the base station 110 to perform or direct operations of,for example, process 1300 of FIG. 13 , process 1400 of FIG. 14 , and/orother processes as described herein. In some aspects, executinginstructions may include running the instructions, converting theinstructions, compiling the instructions, and/or interpreting theinstructions, among other examples.

In some aspects, the first UE includes means for determining, based atleast in part on an indication of communication frequency between thefirst UE and a second UE, a value for a DRX parameter; and/or means fortransmitting, to the second UE, DRX configuration information, the DRXconfiguration information indicating the value for the DRX parameter.The means for the first UE to perform operations described herein mayinclude, for example, one or more of communication manager 140, antenna252, demodulator 254, MIMO detector 256, receive processor 258, transmitprocessor 264, TX MIMO processor 266, modulator 254,controller/processor 280, or memory 282.

In some aspects, the first UE includes means for receiving, from asecond UE, DRX configuration information, the DRX configurationinformation indicating a value for a DRX parameter, and the DRXconfiguration information indicating a CBR configuration for the firstUE; and/or means for configuring DRX using the DRX configurationinformation. The means for the first UE to perform operations describedherein may include, for example, one or more of communication manager140, antenna 252, demodulator 254, MIMO detector 256, receive processor258, transmit processor 264, TX MIMO processor 266, modulator 254,controller/processor 280, or memory 282.

While blocks in FIG. 2 are illustrated as distinct components, thefunctions described above with respect to the blocks may be implementedin a single hardware, software, or combination component or in variouscombinations of components. For example, the functions described withrespect to the transmit processor 264, the receive processor 258, and/orthe TX MIMO processor 266 may be performed by or under the control ofcontroller/processor 280.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2 .

FIG. 3 is a diagram illustrating an example 300 of DRX, in accordancewith the present disclosure.

As shown in FIG. 3 , a UE may be configured to perform DRX in a mannerdesigned to conserve battery life of the UE. For example, the UE maytransition to a DRX inactive state (e.g., a sleep mode or off duration)for a DRX inactive duration. While in the DRX inactive state, the UE mayrefrain from transmitting or receiving on a link between the UE andanother device (e.g., a base station, a sidelink UE, and/or the like),may deactivate particular subcarriers or component carriers (e.g., ifcarrier aggregation is implemented on the access link) of the link, maydeactivate one or more components of the UE, and/or the like. Moreover,DRX operation may include periodically transitioning out of the DRXinactive state and into a DRX active state (e.g., an awake mode or onduration) for a DRX active duration to monitor for downlinkcommunications from a BS or sidelink communications from another UE. Insome cases, the BS may transmit an instruction to the UE to configureDRX, to cause the UE to perform DRX in accordance with DRX parameters,to transition to a DRX inactive state, and/or the like.

As shown in example 300, when performing DRX, the UE may repeat DRXcycles. Each DRX cycle includes an active portion and an inactiveportion. For the inactive portion of the DRX cycle, the UE may be in theDRX inactive state (e.g., conserving battery life), and for the activeportion of the DRX cycle, the UE may be in the DRX active state (e.g.,monitoring for communications). In some cases, the UE may be configuredto use a WUS, such as a physical downlink communication channel (PDCCH)WUS or a sidelink WUS associated with a sidelink channel, to determinewhether, for a given DRX cycle, the UE should switch from the DRXinactive state to the DRX active state. For example, a BS or another UEmay transmit a WUS to the UE to provide an indication that the UE shouldswitch to the DRX active mode (e.g., for reception of one or more othersignals, such as PDCCH, during the DRX active mode). In some cases, ifthe UE is configured to use a WUS, and a WUS is not received during theDRX inactive state, the UE may not switch to a DRX active state. In thissituation, the UE may only switch from the DRX inactive state to the DRXactive state based at least in part on receiving a WUS during the DRXinactive state. When a control signal is received during DRX activestate, the UE may extend the DRX active duration (e.g., until aninactivity timer expires) to extend the window during which the UE mayreceive additional control signals. Using the WUS to trigger switchingto the DRX active state may enable the UE to further conserve batterylife by avoiding unnecessarily switching to the DRX active state.

As noted above, in some cases, a UE may be configured to communicatewith another UE (or an integrated access and backhaul (IAB) node may beconfigured to communicate with another IAB node) over a sidelink, whichmay be referred to as sidelink communication. In some cases, sidelinkcommunication between UEs might not be scheduled by a BS and may occurat any time. For example, one or more of the UEs may be operatingoutside of a coverage area of a serving BS or may not be communicativelyconnected with a serving BS, in which case the one or more UEs mayautonomously (or semi-autonomously) schedule the transmission ofsidelink communications on the sidelink. Autonomous or semi-autonomousscheduling of sidelink communications may be referred to as Mode 2sidelink operation, and can be contrasted with Mode 1 sidelinkoperation, in which a central scheduler (such as a base station) handlesscheduling of sidelink communications. In the case of Mode 2 sidelinkoperation, the BS may be unable to configure DRX operation for a UE, maybe unable to instruct the UE to operate in a particular DRX state,and/or the like. However, another UE may be able to configure DRXoperation for the UE, provide instructions for the UE to operate in aparticular DRX state, and/or the like, via sidelink communication.

As indicated above, FIG. 3 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 3 .

FIG. 4 is a diagram illustrating an example 400 of sidelinkcommunications. As shown in FIG. 4 , a first UE 405-1 may communicatewith a second UE 405-2 (and one or more other UEs 405) via one or moresidelink channels 410. The UEs 405-1 and 405-2 may communicate using theone or more sidelink channels 410 for P2P communications, D2Dcommunications, V2X communications (e.g., which may include V2Vcommunications, V2I communications, vehicle-to-pedestrian (V2P)communications, and/or the like), mesh networking, and/or the like. Insome aspects, the UEs 405 (e.g., UE 405-1 and/or UE 405-2) maycorrespond to one or more other UEs described elsewhere herein, such asUE 120. In some aspects, the one or more sidelink channels 410 may use aPC5 interface and/or may operate in a high frequency band (e.g., the 5.9GHz band). Additionally, or alternatively, the UEs 405 may synchronizetiming of transmission time intervals (TTIs) (e.g., frames, subframes,slots, symbols, and/or the like) using global navigation satellitesystem (GNSS) timing.

As further shown in FIG. 4 , the one or more sidelink channels 410 mayinclude a physical sidelink control channel (PSCCH) 415, a physicalsidelink shared channel (PSSCH) 420, and/or a physical sidelink feedbackchannel (PSFCH) 425. The PSCCH 415 may be used to communicate controlinformation, similar to a physical downlink control channel (PDCCH)and/or a physical uplink control channel (PUCCH) used for cellularcommunications with a base station 110 via an access link or an accesschannel. The PSSCH 420 may be used to communicate data, similar to aphysical downlink shared channel (PDSCH) and/or a physical uplink sharedchannel (PUSCH) used for cellular communications with a base station 110via an access link or an access channel. For example, the PSCCH 415 maycarry sidelink control information (SCI) 430, which may indicate variouscontrol information used for sidelink communications, such as one ormore resources (e.g., time resources, frequency resources, spatialresources, and/or the like) where a transport block (TB) 435 may becarried on the PSSCH 420. The TB 435 may include data. The PSFCH 425 maybe used to communicate sidelink feedback 440, such as hybrid automaticrepeat request (HARD) feedback (e.g., acknowledgement or negativeacknowledgement (ACK/NACK) information), transmit power control (TPC), ascheduling request (SR), and/or the like.

In some aspects, the one or more sidelink channels 410 may use resourcepools. A resource pool is a configuration indication a group ofresources that can be used for sidelink communication. For example, ascheduling assignment (e.g., included in SCI 430) may be transmitted insub-channels using specific resource blocks (RBs) across time. In someaspects, data transmissions (e.g., on the PSSCH 420) associated with ascheduling assignment may occupy adjacent RBs in the same subframe asthe scheduling assignment (e.g., using frequency division multiplexing).In some aspects, a scheduling assignment and associated datatransmissions are not transmitted on adjacent RBs.

In some aspects, a UE 405 may operate using a transmission mode whereresource selection and/or scheduling is performed by the UE 405 (e.g.,rather than a central scheduler such as a base station 110). In someaspects, the UE 405 may perform resource selection and/or scheduling bysensing channel availability for transmissions. For example, the UE 405may measure a received signal strength indicator (RSSI) parameter (e.g.,a sidelink-RSSI (S-RSSI) parameter) associated with various sidelinkchannels, may measure a reference signal received power (RSRP) parameter(e.g., a PSSCH-RSRP parameter) associated with various sidelinkchannels, may measure a reference signal received quality (RSRQ)parameter (e.g., a PSSCH-RSRQ parameter) associated with varioussidelink channels, and/or the like, and may select a channel fortransmission of a sidelink communication based at least in part on themeasurement(s).

Additionally, or alternatively, the UE 405 may perform resourceselection and/or scheduling using SCI 430 received in the PSCCH 415,which may indicate occupied resources, channel parameters, and/or thelike. Additionally, or alternatively, the UE 405 may perform resourceselection and/or scheduling by determining a CBR associated with varioussidelink channels, which may be used for rate control (e.g., byindicating a maximum number of resource blocks that the UE 405 can usefor a particular set of subframes).

In the transmission mode where resource selection and/or scheduling isperformed by a UE 405, the UE 405 may generate sidelink grants, and maytransmit the grants in SCI 430. A sidelink grant may indicate, forexample, one or more parameters (e.g., transmission parameters) to beused for an upcoming sidelink transmission, such as one or more resourceblocks to be used for the upcoming sidelink transmission on the PSSCH420 (e.g., for TBs 435), one or more slots to be used for the upcomingsidelink transmission, a modulation and coding scheme (MCS) to be usedfor the upcoming sidelink transmission, and/or the like. In someaspects, a UE 405 may generate a sidelink grant that indicates one ormore parameters for semi-persistent scheduling (SPS), such as aperiodicity of a sidelink transmission. Additionally, or alternatively,the UE 405 may generate a sidelink grant for event-driven scheduling,such as for an on-demand sidelink message.

As indicated above, FIG. 4 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 4 .

FIG. 5 is a diagram illustrating an example 500 of CBR measurements, inaccordance with the present disclosure.

Generally, if a channel to be used for a communication is busy, then thecommunication may cause interference with or may collide with anothertransmission on the channel. Thus, when a transmitting UE needs totransmit a sidelink communication to a receiving UE, the transmitting UEshould take into consideration how busy the channel is when determiningwhen/whether to transmit the sidelink communication on the sidelinkchannel. In order to achieve this, the transmitting UE may be configuredto monitor a CBR associated with the sidelink channel. A CBR is ameasurement indicative of how busy a channel is and, therefore, mayindicate a probability of interference or a collision with anothertransmission on the channel. For example, a CBR may be approximatelyequal to a number of resources that a UE detects being used on thechannel (e.g., based on detecting a received signal strength indicator(RSSI) that satisfies a threshold), divided by a total number ofavailable resources on the channel. A relatively high CBR may indicatethat the channel is being frequently used for transmissions, meaningthat a probability of interference or collision is relatively high. Arelatively low CBR may indicate that the channel is not being usedfrequently, meaning that a probability of interference or collision isrelatively low.

As shown in example 500, CBR measured in slot n may be defined as theportion of sub-channels in a resource pool having a sidelink RSSI (e.g.,measured by the UE) satisfying a (pre-)configured threshold sensed overa CBR measurement window [n−a, n−1], wherein a is equal to 100(equivalent to 12.5 ms at SCS=120 KHz) or 100·2^(μ) slots (equivalent to100 ms/800 slots at μ=3), according to higher layer parametertimeWindowSize-CBR. Sidelink RSSI may be defined as the linear averageof the total received power (in Watts) observed in the configuredsub-channel in OFDM symbols of a slot configured for PSCCH and PSSCH,starting from the 2^(nd) OFDM symbol.

For frequency Range 1, the reference point for the sidelink RSSI may bethe antenna connector of the UE. For frequency Range 2, sidelink RSSImay be measured based at least in part on the combined signal fromantenna elements corresponding to a given receiver branch. For FrequencyRange 1 and 2, if receiver diversity is in use by the UE, the reportedsidelink RSSI value may not be lower than the corresponding sidelinkRSSI of any of the individual receiver branches.

In some cases, a sidelink transmitting UE may use a CBR measured by thetransmitting UE and a CBR measured by the sidelink receiving UE toselect transmission parameters for future sidelink communications withthe receiving UE. For example, CBR may be used to select a number ofHARQ retransmission, select the number of sub-channels to be used forPSSCH/PSCCH transmissions in a slot, select an MCS, or select a channeloccupancy ratio (CR) limit, among other examples.

As indicated above, FIG. 5 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 5 .

As noted above, DRX may conserve UE battery resources by limitingcommunication resources used while performing DRX operations. Due tocommunication resource limitations during DRX, using DRX may limit orprevent a sidelink receiving UE from using various resources todetermine CBR and/or transmit data indicating the CBR to the sidelinktransmitting UE, which may reduce communications quality due to a lackof adequate CBR measurements, which may lead to high resource collision.High resource collision reduces throughput, reduces the reliability ofcommunications, and introduces latency due to delays in communicationscheduling.

Some aspects described herein provide techniques and apparatuses forproviding sidelink communication parameters (e.g., parameters associatedwith CBR) during DRX. In some aspects, a UE (e.g., a sidelink receiveUE, or SL Rx UE) may provide, to a sidelink UE (e.g., a sidelinktransmit UE, or SL Tx UE) DRX configuration information for sidelinkcommunications with the sidelink UE. The DRX configuration informationmay indicate a CBR configuration of the UE (e.g., data indicating theCBR of the UE, the manner in which CBR for the UE is to be determined,and/or the like). In some aspects, the UE may receive, based at least inpart on the DRX configuration information, a communication from thesidelink UE, and one or more parameters associated with thecommunication may be based at least in part on the CBR configuration ofthe UE.

As a result, the UE is able to perform DRX to conserve battery andcommunications resources while also using the DRX configurationinformation and CBR configuration to provide the sidelink transmit UEwith information enabling the sidelink transmit UE to determine one ormore parameters for subsequent sidelink communications with the UE. TheDRX configuration information and/or CBR configuration may enable betterresource selection for future sidelink communications, which may lead tohigher quality sidelink communications and less interference with othercommunications. Providing the DRX configuration information and/or CBRconfiguration while performing DRX may preserve the battery savingbenefits of DRX by using one or more CBR configurations describedherein. Thus, throughput is improved, the reliability of communicationsis improved, and latency due to delays in communication scheduling isreduced.

FIGS. 6A-6C are diagrams illustrating an example 600 associated with CBRmeasurements for sidelink communications, in accordance with variousaspects of the present disclosure. As shown in FIGS. 6A-6C, example 600includes communication between two or more UEs 605, 610, 615 (e.g., UE120, UE 405). In some aspects, the UEs may be included in a wirelessnetwork, such as wireless network 100 or the sidelink communicationnetwork described above in connection with FIG. 4 . The UEs maycommunicate via a wireless sidelink, as described above in connectionwith FIG. 4 .

As shown in FIG. 6A, a Tx UE 605 may be capable of transmitting asidelink communication (e.g., a signal) using a first beam (e.g., B1 asshown in FIG. 6A). The Tx UE 605 may measure a CBR for the first beamand/or for a beam group that includes the first beam to avoid creatingcollisions or interference at nearby UEs, such as at a UE 615 as shownin FIG. 6A. For example, the Tx UE may measure channel usage using thefirst beam to determine a level of the channel use (e.g., the CBR) inthe spatial direction associated with the first beam.

For example, as shown by reference number 620, a UE 610 may transmit asidelink communication to the UE 615. The sidelink communicationtransmitted by the UE 610 may be received by the UE 615. The sidelinkcommunication may be a PSCCH signal (e.g., carrying SCI and/or resourcereservation information) or may be a PSSCH signal. The UE 615 mayreceive and/or decode the sidelink communication transmitted by the UE610.

As shown by reference number 625, the UE 615 may transmit, to the UE610, a feedback communication (e.g., ACK/NACK feedback) based onreceiving the sidelink communication on a PSFCH. The feedbackcommunication may include one or more fields (e.g., one or more bits) toindicate a number of resources (e.g., a number of subchannels) used bythe sidelink communication. For example, the one or more fields may beadded to the feedback communication (e.g., in addition to the ACK/NACKfeedback) to indicate the feedback and the number of resources (e.g.,the number of subchannels) used by the sidelink communication.Additionally, or alternatively, the UE 615 may transmit or broadcast anannouncement message (e.g., a receive (Rx) announcement) indicating areservation of resources for one or more upcoming sidelinkcommunications. For example, the sidelink communication from the UE 610may carry SCI that reserves resources (e.g., one or more subchannels)for an upcoming sidelink communication. The UE 615 may transmit theannouncement message indicating the number of resources (e.g., thenumber of subchannels) for the upcoming sidelink communication.

As shown by reference number 630, the Tx UE 605 may receive the feedbackcommunication and/or the announcement message from the UE 615 using thefirst beam (and/or one or more other beams included in a beam group thatincludes the first beam). For example, as shown in FIG. 6A, the feedbackcommunication and/or the announcement message may be transmitted to theUE 610 in a spatial direction such that the Tx UE 605 is enabled toreceive the feedback communication and/or the announcement message usingthe first beam. This enables the Tx UE 605 to identify channel use inthe spatial direction of the first beam, as described in more detailbelow.

As shown by reference number 635, the Tx UE 605 may measure a first CBR(e.g., a Tx CBR) for the first beam and/or for a beam group thatincludes the first beam (e.g., a first beam group). For example, the TxUE 605 may identify the number of resources (e.g., the number ofsubchannels) used or reserved by the UE 615 based at least in part onthe feedback communication and/or the announcement message.

The Tx UE 605 may measure the first CBR over a measurement window. Forexample, the Tx UE 605 may monitor for feedback communications and/orthe announcement messages using the first beam and/or using beamsincluded in the first beam group during the measurement window. The TxUE 605 may determine the number of resources (e.g., the number ofsubchannels) in which there were sidelink communications (e.g., PSSCHtransmissions), as computed by the Tx UE 605 based at least in part onfeedback communications and/or announcement messages received by the TxUE 605 on the first beam or on beams included in the first beam groupduring the measurement window. The Tx UE 605 may determine the first CBRbased at least in part on the number of resources (e.g., the number ofsubchannels) identified during the measurement window.

As a result, the Tx UE 605 is enabled to determine a channel use fornearby Rx UEs, such as UE 615. For example, if the Tx UE 605 determinesa relatively high CBR for the first CBR, then the first CBR may indicatea busy channel (e.g., a high number of UEs near the Tx UE 605 (in thespatial direction of the first beam) receiving communications). If theTx UE 605 determines a relatively low CBR for the first CBR, then thefirst CBR may indicate an idle channel (e.g., a low number of UEs nearthe Tx UE 605 (in the spatial direction of the first beam) receivingcommunications).

As shown in FIG. 6B, an Rx UE 640 (e.g., UE 120, UE 405) may be theintended recipient of the sidelink communication from the Tx UE 605(e.g., that is to be transmitted using the first beam, as describedabove). For example, the Rx UE 640 may intend to receive the sidelinkcommunication from the Tx UE 605 using a second beam (e.g., B2 as shownin FIG. 6B). The second beam may be included in a beam group (e.g., asecond beam group) of the Rx UE 640.

In some aspects, the Rx UE 640 may be configured to monitor channel usein the spatial direction of the second beam and/or the second beamgroup. For example, one or more UEs, such as a UE 645 (e.g., UE 120, UE405) as shown in FIG. 6B, may transmit in a spatial direction of thesecond beam and/or the second beam group. For example, as shown byreference number 650, the UE 645 may transmit a sidelink communicationin the spatial direction of the second beam and/or the second beamgroup. The sidelink communication may be a PSCCH signal (e.g., carryingSCI) or a PSSCH signal. The sidelink communication may be intended foranother Rx UE (not shown in FIG. 6B).

As shown by reference number 655, in some aspects, the Rx UE 640 mayreceive, detect, and/or measure the sidelink communication using thesecond beam and/or another beam included in the second beam group of theRx UE 640. For example, the Rx UE 640 may measure an RSSI (e.g., asidelink RSSI (SL-RSSI)) of the sidelink communication using the secondbeam and/or another beam included in the second beam group. The SL-RSSImay be defined by a wireless communication standard, such as a 3GPPSpecification. For example, the SL-RSSI may be a linear average of thetotal received power observed in a configured subchannel in OFDM symbolsof a slot configured for PSCCH and PSSCH (e.g., starting from the secondOFDM symbol of the slot).

As shown by reference number 660, in some aspects, the Rx UE 640 maymeasure a second CBR (e.g., an Rx CBR) for the second beam and/or forthe second beam group. For example, the Rx UE 640 may monitor forsidelink communications using the second beam and/or the second beamgroup to measure the SL-RSSI of the sidelink communications (e.g., in asimilar manner as described above). The Rx UE 640 may measure the secondCBR based at least in part on a number of subchannels associated with anSL-RSSI value that satisfies a threshold over a measurement window. TheRx UE 640 may measure the second CBR for the second beam (e.g., usingmeasured SL-RSSI on the second beam) and/or for the second beam group(e.g., using measured SL-RSSI on any beam included in the second beamgroup).

As a result, in some aspects, the Rx UE 640 is enabled to determine achannel use in the receive direction (e.g., in the spatial direction ofthe second beam). For example, if the Rx UE 640 determines a relativelyhigh CBR (e.g., 1 or near 1, on a scale from 0 to 1, where 1 indicates abusy channel and 0 indicates an idle channel) for the second CBR, thenthe second CBR may indicate that the channel is busy in the receivedirection (e.g., that there is a high number of UEs transmitting in thespatial direction of the second beam). If the Rx UE 640 determines arelatively low CBR (e.g., 0 or near 0 on a scale from 0 to 1) for thesecond CBR, then the second CBR may indicate that the channel is idle inthe receive direction (e.g., that there is a low number of UEstransmitting in the spatial direction of the second beam).

As shown by reference number 665, in some aspects, the Rx UE 640 maytransmit, and the Tx UE 605 may receive, an indication of the second CBR(e.g., the Rx CBR) for the second beam and/or for the second beam group.In some aspects, the indication of the second CBR may be indicated by aCBR configuration of the Rx UE 640, which may be indicated by DRXconfiguration information provided to the Tx UE 605 prior to or with theindication of the second CBR. By transmitting the indication of thesecond CBR, the Tx UE 605 is enabled to identify a channel use (e.g.,the second CBR) detected at the Rx UE 640 and determine one or moreparameters for the sidelink communication to the Rx UE 640 based atleast in part on the channel use at the Rx 640, as described in moredetail below.

In some aspects, the Rx UE 640 may be associated with a CBRconfiguration, indicated by the DRX configuration information of the RxUE 640, that indicates the one or more parameters are predetermined andindependent of a CBR metric associated with a set of resources used toreceive the communication. In this situation, the Rx UE 640 may foregodetermining CBR prior to receiving sidelink communications from the TxUE 605. In some aspects, after receiving a sidelink communication fromthe Tx UE 605, the Rx UE 640 may measure at least one parameter, of theone or more parameters, for the set of resources used to receive thecommunication, as described above. The Rx UE 640 may then transmit, tothe Tx UE 605, a subsequent communication that includes a measurement ofthe at least one parameter (e.g., the CBR measured by the Rx UE 640). Inthis situation, while an initial sidelink communication may not have aCBR measurement from the Rx UE 640, subsequent sidelink communicationsbetween the Rx UE 640 and the Tx UE 605 may be based at least in part onCBR measurements from the Rx UE 640.

As shown in FIG. 6C, and by reference number 670, the Tx UE 605 maydetermine one or more parameters, for the sidelink communication to theRx UE 640, based at least in part on the first CBR and/or the secondCBR. The one or more parameters may include a number of HARQretransmissions for the sidelink communication, a number of subchannelsto be used by the Tx UE 605 (e.g., in a slot), an MCS to be used for thesidelink communication, and/or a CR limit (e.g., for the Tx UE 605 orthe Rx UE 640), among other examples.

In some aspects, the Tx UE 605 may determine, based at least in part onthe CBR configuration of the Rx UE 640, the one or more parameters(e.g., transmit parameters) for communication with the Rx UE 640. TheCBR configuration may be indicated by DRX configuration informationobtained by the Tx UE 605 for communications with the Rx UE 640. Forexample, in some situations, the DRX configuration and/or CBRconfiguration may have been previously negotiated between the Tx UE 605and the Rx UE 640. In this situation, the Tx UE 605 may determine theone or more parameters based at least in part on the DRX and/or CBRconfiguration of the Rx UE 640.

In some aspects, the CBR configuration indicates that the one or moreparameters are predetermined and independent of a CBR associated with aset of resources used to receive the communication. In this situation,the Tx UE 605 may not use the second CBR in determining the one or moreparameters of a first transmission to the Rx UE 640.

In some aspects, as noted above, after receiving a sidelinkcommunication from the Tx UE 605, the Rx UE 640 may measure at least oneparameter associated with the CBR and transmit a result (e.g., a report)indicating the second CBR. In this situation, the Tx UE 605 may updateat least one parameter, of the one or more parameters (e.g., used forsidelink communications to the Rx UE 640), based at least in part onreceiving the result from the Rx UE 640. The Tx UE 605 may transmitsubsequent sidelink communications to the Rx UE 640 and the Tx UE 605based at least in part on the updated one or more parameters (e.g.,based at least in part on the second CBR).

As shown by reference number 675, the Tx UE 605 may transmit, to the RxUE 640, the sidelink communication using the one or more parameters(e.g., determined by the Tx UE 605 as described above). The Tx UE 605may transmit the sidelink communication using the first beam (e.g., B1).The Rx UE 640 may receive the sidelink communication using the secondbeam (e.g., B2). As a result, the Tx UE 605 may ensure that the sidelinkcommunication has a low probability or likelihood of causing collisionsand/or interference (e.g., if the first CBR and/or second CBR is arelatively high CBR, indicating a busy channel) by using a lower numberof HARQ retransmissions, a lower number of subchannels, a lower orderMCS, and/or a lower CR limit, among other examples. Similarly, the Tx UE605 may improve a communication performance of the sidelinkcommunication (e.g., if the first CBR and/or second CBR is a relativelylow CBR, indicating an idle channel) by using a greater number of HARQretransmissions, a greater number of subchannels, a higher order MCS,and/or a greater CR limit, among other examples.

Moreover, by using a beamformed CBR as described above, the Tx UE 605may be enabled to identify when the Tx UE 605 is transmitting into abusy portion of the network (e.g., with a relatively high CBR) and usetransmit parameters that reduce a likelihood or a probability ofinterference or collision with other transmissions. Similarly, the Tx UE605 may be enabled to identify when the Tx UE 605 is transmitting intoan idle portion of the network (e.g., with a relatively low CBR) and usetransmit parameters that increase a communication performance of thesidelink communication.

While not depicted in example 600, the Tx UE 605 and/or the Rx UE 640may determine CBR in a variety of ways (e.g., based at least in part ontheir respective CBR configuration). As discussed in further detailbelow, in some aspects, the manner in which Tx UE 605 and/or Rx UE 640determine CBR may be affected by the DRX configurations of therespective devices, in a manner designed to provide CBR measurementswhile conserving UE battery life benefits of performing DRX.

As indicated above, FIGS. 6A-6C are provided as examples. Other examplesmay differ from what is described with respect to FIGS. 6A-6C.

FIG. 7 is a diagram illustrating an example 700 of sidelinkcommunication parameters for DRX communications, in accordance with thepresent disclosure. As shown in FIG. 7 , a UE (e.g., UE 120, shown asUE2 (Rx UE)) may measure CBR while performing DRX to facilitate sidelinkcommunications with another UE (e.g., UE 120, shown as UE1 (Tx UE)).

In some aspects, the CBR configuration of the UE may indicate that theUE is to continuously measure at least one CBR metric (e.g., RSSI). Insome aspects, the UE may continuously measure the at least one CBRmetric for a set of resources associated with receiving a subsequentcommunication from a sidelink UE. The UE may transmit, to the sidelinkUE and based at least in part on the continuous measuring, one or morevalues (e.g., values for RSSI and/or CBR, among other examples)associated with the at least one CBR metric.

For example, as shown in example 700, the Tx UE and the Rx UE may bothmeasure RSSI and/or CBR throughout a DRX cycle. In some aspects, the UEmay measure RSSI and/or CBR for resources within a sliding window, suchas a sliding window parameter (e.g., shown as theslTimeWindowSizeCBR-r16 parameter). In some aspects, the continuousmeasurements may pause when the UE enters an active DRX state. Forexample, as shown in the example 700, after the Tx UE transmits, and theRx UE receives, the sidelink WUS, the Rx UE provides a CBR measurement,or at least one metric (e.g., RSSI) enabling the Tx UE to calculate CBRfor the Rx UE. During the next active DRX state, the UEs may pausecontinuous measurement, and the Tx UE may transmit, and the Rx UE mayreceive, SCI via sidelink communications (e.g., based on transmitparameters determined based at least in part on the Rx CBR). Such a CBRconfiguration may be beneficial, for example, in situations wheremeasuring RSSI does not consume much power compared to searching andprocessing for SCI.

In some aspects, the CBR configuration may indicate that the UE is tomeasure at least one CBR metric at a same time as the sidelink UE is tomeasure another CBR metric. For example, the CBR configuration mayindicate that the Tx UE is to measure Tx CBR at the same time the Rx UEis to measure Rx CBR. In some aspects, as mentioned above, the one ormore parameters (e.g., transmit parameters determined by the Tx UE)include at least one of a number of HARQs, an MCS, a number of subchannels, or a CR limit.

As indicated above, FIG. 7 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 7 .

FIG. 8 is a diagram illustrating an example 800 of sidelinkcommunication parameters for DRX communications, in accordance with thepresent disclosure. As shown in FIG. 8 , a UE (e.g., UE 120, shown asUE2 (Rx UE)) may measure CBR while performing DRX to facilitate sidelinkcommunications with another UE (e.g., UE 120, shown as UE1 (Tx UE)).

In some aspects, the CBR configuration of the UE may indicate that theUE is to measure at least one CBR metric in response to receiving, froma sidelink UE, a sidelink WUS. In some aspects, the UE (e.g., Rx UE) mayreceive the sidelink WUS from the sidelink UE (e.g., Tx UE) and measure,based at least in part on receiving the sidelink WUS and the CBRconfiguration, the at least one CBR metric for a set of resourcesassociated with receiving subsequent communications from the sidelinkUE. The UE may transmit, to the sidelink UE and based at least in parton measuring the at least one CBR metric, one or more values (e.g.,values for RSSI, and/or CBR, among other examples) associated with theat least one CBR metric.

In some aspects, the communication received by the Rx UE (e.g., sidelinkWUS or other signal from Tx UE) may include information associated withmeasuring CBR of a set of resources associated with the communication.For example, in a situation where the Rx UE receives a sidelink WUS, thesidelink WUS may indicate the resources (e.g., time, frequency, and/orspatial (e.g., beam) resources) for which CBR is to be measured.

In some aspects, the UE (e.g., Tx UE) may receive, based at least inpart on the sidelink WUS, one or more values associated with the atleast one CBR metric. The UE may update at least one parameter (e.g.,transmit parameters), of the one or more parameters, based at least inpart on the one or more values. The UE may then transmit a subsequentcommunication using the at least one updated parameter.

For example, as shown in example 800, the Tx UE and the Rx UE maymeasure RSSI and/or CBR in the time between the SL WUS beingtransmitted/received and the active DRX state. The Tx UE measures CBRafter transmitting the sidelink WUS to the Rx UE, and the Rx UE measuresCBR after receiving the sidelink WUS from the Tx UE. The Rx UE provides,to the Tx UE, one or more values associated with the at least one CBRmetric just before switching to the active DRX state. In some aspects,if sidelink WUS is not configured or used, the UE may behave as thoughthe sidelink WUS was sent and received at every occasion. A CBRconfiguration based on measuring CBR after transmitting/receiving thesidelink WUS may be beneficial by limiting the resource usage of the UEsto measuring CBR only in a window of time shortly before the CBR valuesare to be used for the sidelink communications, which may conserve UEresources, such as battery and/or communication resources.

As indicated above, FIG. 8 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 8 .

FIG. 9 is a diagram illustrating an example 900 of sidelinkcommunication parameters for DRX communications, in accordance with thepresent disclosure. As shown in FIG. 9 , a UE (e.g., UE 120, shown asUE2 (Rx UE)) may measure CBR while performing DRX to facilitate sidelinkcommunications with another UE (e.g., UE 120, shown as UE1 (Tx UE)).

In some aspects, the CBR configuration of the UE may indicate that theUE is to measure at least one CBR metric during an active monitoringstate of a DRX cycle of the UE. In some aspects, the UE (e.g., Rx UE orTx UE) may measure, during the active DRX state, the at least one CBRmetric for a set of resources associated with receiving (e.g., for theRx UE) or transmitting (e.g., for the Tx UE) subsequent communications.The UE (e.g., Rx UE) may transmit, to the sidelink UE (e.g., Tx UE) andbased at least in part on measuring the at least one CBR metric, one ormore values (e.g., values for RSSI, and/or CBR, among other examples)associated with the CBR metric.

In some aspects, the UE may extend, based at least in part on the atleast one CBR metric failing to satisfy a threshold metric, measurementof the at least one CBR metric beyond the active monitoring state of theDRX cycle. For example, in a situation where the CBR is relatively high,the UE may continue to measure CBR beyond the active DRX state in amanner designed to identify resources with a lower CBR (e.g., a CBR thatsatisfies the threshold.

For example, as shown in example 900, the Tx UE and the Rx UE maymeasure RSSI and/or CBR during the active DRX state of each DRX cycle.The Rx UE may provide, to the Tx UE, one or more values associated withthe at least one CBR metric just before switching to the active DRXstate. Such a CBR configuration may be beneficial by limiting theresource usage of the UEs to measuring CBR only during periods of timewhere the UE is already actively monitoring for SCI, or during shortextension periods, which may conserve UE resources, such as batteryand/or communication resources.

As indicated above, FIG. 9 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 9 .

FIG. 10 is a diagram illustrating an example 1000 of sidelinkcommunication parameters for DRX communications, in accordance with thepresent disclosure. As shown in FIG. 10 , a UE (e.g., UE 120, shown asUE2 (Rx UE)) may measure CBR while performing DRX to facilitate sidelinkcommunications with another UE (e.g., UE 120, shown as UE1 (Tx UE)).

In some aspects, the CBR configuration of the UE may indicate that theUE is to measure the at least one CBR metric during a period of timeprior to the active monitoring state of the DRX cycle. The monitored setof resources may be for a set of resources associated with receivingsubsequent communications from the sidelink UE. The UE (e.g., Rx UE) maytransmit, to the sidelink UE (e.g., Tx UE) and based at least in part onmeasuring the at least one CBR metric, one or more values (e.g., valuesfor RSSI, and/or CBR, among other examples) associated with the CBRmetric.

For example, as shown in example 1000, the Tx UE and the Rx UE maymeasure RSSI and/or CBR during a period of time prior to the active DRXstate of each DRX cycle. In some aspects, the period of time may bepreconfigured (e.g., based on a slTimeWindowSizeCBR-r16 parameter or thelike). The Rx UE may provide, to the Tx UE, one or more valuesassociated with the at least one CBR metric just before switching to theactive DRX state. Such a CBR configuration may be beneficial by limitingthe resource usage of the UEs to measuring CBR only during periods oftime shortly before the CBR might be used by the Tx UE to determine theone or more parameters (e.g., transmit parameters), which may conserveUE resources, such as battery and/or communication resources.

As indicated above, FIG. 10 is provided as an example. Other examplesmay differ from what is described with respect to FIG. 10 .

In some aspects, as described above, the CBR configuration of the UE mayindicate that the UE is to forego CBR measurement. In this situation,the one or more parameters (e.g., transmit parameters) may be fixed orpreconfigured. In some aspects, after a first transmission occurs usingone or more fixed parameters, the Rx UE may measure CBR associated withthe resources of the first transmission, report the CBR measurements tothe Tx UE, and the Tx UE may use the CBR measurements provided by the RxUE to update the one or more parameters for subsequent transmissions.

In this way, a UE is able to perform DRX to conserve battery andcommunications resources while also using the DRX configurationinformation and CBR configuration to provide a sidelink transmit UE withinformation enabling the sidelink transmit UE to determine one or moreparameters for subsequent sidelink communications with the UE. The DRXconfiguration information and/or CBR configuration may enable betterresource selection for future sidelink communications, which may lead tohigher quality sidelink communications and less interference with othercommunications. Providing the DRX configuration information and/or CBRconfiguration while performing DRX may preserve the battery savingbenefits of DRX by using one or more CBR configurations describedherein.

FIG. 11 is a diagram illustrating an example process 1100 associatedwith determining sidelink communication parameters for DRXcommunications, in accordance with the present disclosure. As shown inFIG. 11 , a UE (e.g., UE 120) may selectively determine a manner inwhich to measure CBR during DRX.

In some aspects, a first UE (e.g., a Tx UE) may determine, based atleast in part on an indication of communication frequency between thefirst UE and a second UE (e.g., an Rx UE), a value for a DRX parameter.The first UE may then transmit, to the second UE, DRX configurationinformation that indicates the value for the DRX parameter.

In some aspects, the indication of communication frequency may indicatea probability that the first UE will transmit a communication to thesecond UE or a CR measurement. For example, the indication ofcommunication frequency may be designed to indicate how often the firstUE will transmit to the second UE. Depending on the types ofcommunications, the first UE may transmit to the second UE on a regularbasis or a more sporadic, or bursty, basis. For example, if thetransmission include streaming data, such as audio data, video data,and/or a file transfer, among other examples, the communicationfrequency may be expected to be relatively high, or regular, as opposedto transmissions that include keep-alive communications, and/or UEnotifications, among other examples. In some aspects, the CR measurementmay be used to determine the communication frequency (e.g., a higher CRmeasurement may indicate more frequent communications, while a lower CRmeasurement may indicate less frequent communications). In some aspects,whether communication frequency is high or low may be determined in arelative manner. For example, the UEs that are in a highest 50% ofcommunication frequency may be considered to have a high communicationfrequency, while UEs that are in a lowest 50% of communication frequencymay be considered to have low communication frequency.

In some aspects, the DRX parameter may include an offset parameterindicating a time gap between a beginning of a DRX cycle and an activemonitoring state of the DRX cycle. For example, as shown in example1100, a first offset range is shown for UEs with a low communicationfrequency, and a second offset range is shown for UEs with a highcommunication frequency. In this example, the offset range for any ofthe UEs with a low communication frequency is in the first half of theDRX cycle, such that any UE with a low frequency of communication willhave an active DRX state occur in the first range (e.g., in the firsthalf of the DRX cycle). The offset range for any UEs with a highcommunication frequency is in the second half of the DRX cycle, suchthat any UE with a high frequency of communication will have an activeDRX state occur in the second range (e.g., in the second half of the DRXcycle). The offset parameter for any given UE may cause the active DRXstate to occur anywhere within its corresponding range, and UEsassociated with the same range need not have the same offset parameter.For example, multiple different UEs with different offset parameters mayhave an active DRX state in the first or the second range.

In some aspects, the DRX configuration information includes dataidentifying one of a plurality of different types of CBR configurations.For example, the DRX configuration information may identify any of theCBR configurations described with respect to FIGS. 6-10 . In someaspects, a first type of CBR configuration, of the different types ofCBR configuration, may indicate that the first UE (e.g., Rx UE or Tx UE)is to measure at least one CBR metric during an active monitoring stateof a DRX cycle (e.g., as described with respect to FIG. 9 ).Additionally, or alternatively, a second type of CBR configuration, ofthe different types of CBR configuration, may indicate that the first UEis to forego measuring the at least one CBR metric during the activemonitoring state of the DRX cycle (e.g., as described with respect toFIGS. 6 and 10 ). As shown in example 1100, the low communicationfrequency UEs may forego measuring CBR at all, as the low communicationfrequency may not warrant frequent CBR measurements. The high frequencyUEs, on the other hand, may use a different CBR configuration, which inthis example corresponds to the CBR configuration described with respectto FIG. 9 , where CBR measurements (e.g., RSSI measurements) occurduring the active DRX state.

In some aspects, the different types of CBR configurations may include:a first CBR configuration indicating that one or more parameters for acommunication between the first UE and the second UE are predeterminedand independent of a CBR metric associated with a set of resources usedto transmit the communication (e.g., as described with respect to FIGS.6 and 10 ), a second CBR configuration indicating that the one or moreparameters for the communication between the first UE and the second UEare to be based at least in part on measurements measured based at leastin part on the first UE transmitting a sidelink WUS to the second UE(e.g., as described with respect to FIG. 8 ), a third CBR configurationindicating that the one or more parameters for the communication betweenthe first UE and the second UE are to be based at least in part onmeasurements made during an active monitoring state of a DRX cycle(e.g., as described with respect to FIG. 9 ), and a fourth CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured during a period of time prior tothe active monitoring state of the DRX cycle (e.g., as described withrespect to FIGS. 7 and 10 ). While various examples are describedherein, any of the described CBR configurations may be used for any ofthe different ranges associated with different communicationfrequencies.

In some aspects, the first UE may dynamically update the value for theDRX parameter based at least in part on an updated indication ofcommunication frequency. For example, the first UE may determine thatcommunications with a second UE are transitioning from low frequency tohigh frequency, or from high frequency to low frequency, and determineto update the offset parameter for transmissions to the second UE basedon the transition.

In some aspects, the first UE may transmit, and the second UE mayreceive, the DRX configuration information. The DRX configurationinformation may indicate a value for a DRX parameter (e.g., an offsetparameter, a duration time parameter, and/or a long cycle parameter,among other examples) and may indicate a CBR configuration for the firstUE. The second UE may configure DRX using the DRX configurationinformation. For example, the second UE (e.g., Rx UE) may configure DRXwith an offset parameter that causes the second UE to activate theactive DRX state within a corresponding range of the DRX cycle. In someaspects, the second UE may transmit, to the first UE and based at leastin part on the CBR configuration, at least one CBR metric. For example,the second UE (e.g., Rx UE) may measure CBR using resources specified bythe CBR configuration and transmit the CBR to the first UE, which thefirst UE may use to determine one or more parameters (e.g., transmitparameters) for subsequent communications with the second RE.

In some aspects, Rx UEs with a relatively low probability (e.g., lessthan 0.1) of using an active DRX state to transmit or receivecommunications with a Tx UE may be considered to have low communicationfrequency, while Rx UEs with a relative high probability (e.g., greaterthan 0.9) of using the active DRX state to transmit or receivecommunications with the Tx UE may be considered to have highcommunication frequency.

As indicated above, FIG. 11 is provided as an example. Other examplesmay differ from what is described with respect to FIG. 11 .

FIG. 12 is a diagram illustrating an example process 1200 associatedwith determining sidelink communication parameters for DRXcommunications, in accordance with the present disclosure. As shown inFIG. 12 , a UE (e.g., UE 120) may selectively determine a manner inwhich to measure CBR during DRX.

In some aspects, the indication of communication frequency is associatedwith multiple ranges of communication frequency (e.g., more than tworanges). For example, as shown in example 1200, three additional rangesare shown as being included in a portion of the DRX cycle. Theadditional ranges may be used alternatively to, or in addition to, thetwo ranges described with respect to example 1100 of FIG. 11 . Themultiple ranges of communication frequency (e.g., range 1, range 2, andrange 3) may be associated with respective values for the DRX parameter,and the UE may determine the value for the DRX parameter based on arespective value associated with the range of communication frequencyassociated with the UE. For example, range 1, range 2, and range 3 maybe associated with the same or different DRX parameters, and the DRXparameter (e.g., offset parameter) to be used may depend on the rangewithin which the UE communication frequency places the UE. In example1200, the active DRX state is in range 1, so the UE may use the DRXparameter associated with range 1.

The CBR configuration for a communication between a first UE (e.g., TxUE) and a second UE (e.g., Rx UE) may indicate different types of CBRconfiguration for different ranges of communication frequency, asdescribed above with respect to FIG. 11 . For example, one type of CBRconfiguration (e.g., associated with range 1) may indicate that thesecond UE is to forego measuring at least one CBR metric during theactive DRX state, while a second type of CBR configuration (e.g.,associated with range 2 and/or range 1) may indicate that the second UEis to measure the at least one CBR metric during the active DRX state,during a time period before the active DRX state, and/or in response toreceiving a sidelink WUS from the first UE, among other examplesdescribed herein.

As indicated above, FIG. 12 is provided as an example. Other examplesmay differ from what is described with respect to FIG. 12 .

FIG. 13 is a diagram illustrating an example process 1300 performed, forexample, by a first user equipment (UE), in accordance with the presentdisclosure. Example process 1300 is an example where the UE (e.g., UE120) performs operations associated with determining discontinuousreception communication parameters for sidelink communications.

As shown in FIG. 13 , in some aspects, process 1300 may includedetermining, based at least in part on an indication of communicationfrequency between the first UE and a second UE, a value for adiscontinuous reception (DRX) parameter (block 1310). For example, theUE (e.g., using communication component 1508, depicted in FIG. 15 ) maydetermine, based at least in part on an indication of communicationfrequency between the first UE and a second UE, a value for adiscontinuous reception (DRX) parameter, as described above.

As further shown in FIG. 13 , in some aspects, process 1300 may includetransmitting, to the second UE, DRX configuration information, the DRXconfiguration information indicating the value for the DRX parameter(block 1320). For example, the UE (e.g., using transmission component1504, depicted in FIG. 15 ) may transmit, to the second UE, DRXconfiguration information, the DRX configuration information indicatingthe value for the DRX parameter, as described above.

Process 1300 may include additional aspects, such as any single aspector any combination of aspects described below and/or in connection withone or more other processes described elsewhere herein.

In a first aspect, the DRX parameter comprises an offset parameterindicating a time gap between a beginning of a DRX cycle and an activemonitoring state of the DRX cycle.

In a second aspect, alone or in combination with the first aspect, theindication of communication frequency comprises a probability that thefirst UE will transmit a communication to the second UE, or a CRmeasurement.

In a third aspect, alone or in combination with one or more of the firstand second aspects, process 1300 includes determining that theindication of communication frequency is associated with a range ofcommunication frequency of a plurality of ranges of communicationfrequency, the plurality of ranges of communication frequency beingassociated with respective values for the DRX parameter, and whereindetermining the value for the DRX parameter comprises determining, asthe value for the DRX parameter, a respective value associated with therange of communication frequency.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the range of communication frequency ishigher than another range of communication frequency of the plurality ofranges of communication frequency, and wherein the respective valueassociated with the range of communication frequency is higher thananother respective value associated with the other range ofcommunication frequency.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, a CBR configuration for a communication betweenthe first UE and the second UE indicates different types of CBRconfiguration for different ranges of communication frequency.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, a first type of CBR configuration, of thedifferent types of CBR configuration, indicates that the first UE is tomeasure at least one CBR metric during an active monitoring state of aDRX cycle, and wherein a second type of CBR configuration, of thedifferent types of CBR configuration, indicates that the first UE is toforego measuring the at least one CBR metric during the activemonitoring state of the DRX cycle.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, a first type of CBR configuration, of thedifferent types of CBR configuration, indicates that the second UE is tomeasure at least one CBR metric during an active monitoring state of aDRX cycle, and wherein a second type of CBR configuration, of thedifferent types of CBR configuration, indicates that the second UE is toforego measuring the at least one CBR metric during the activemonitoring state of the DRX cycle.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the DRX configuration informationincludes data identifying one of a plurality of different types of CBRconfigurations.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the plurality of different types of CBRconfigurations include a plurality of a first CBR configurationindicating that one or more parameters for a communication between thefirst UE and the second UE are predetermined and independent of a CBRmetric associated with a set of resources used to transmit thecommunication, a second CBR configuration indicating that the one ormore parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredbased at least in part on the first UE transmitting a sidelink WUS tothe second UE, a third CBR configuration indicating that the one or moreparameters for the communication between the first UE and the second UEare to be based at least in part on measurements made during an activemonitoring state of a DRX cycle, and a fourth CBR configurationindicating that the one or more parameters for the communication betweenthe first UE and the second UE are to be based at least in part onmeasurements measured during a period of time prior to the activemonitoring state of the DRX cycle.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the first UE dynamically updates the value forthe DRX parameter based at least in part on an updated indication ofcommunication frequency.

Although FIG. 13 shows example blocks of process 1300, in some aspects,process 1300 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 13 .Additionally, or alternatively, two or more of the blocks of process1300 may be performed in parallel.

FIG. 14 is a diagram illustrating an example process 1400 performed, forexample, by a UE, in accordance with the present disclosure. Exampleprocess 1400 is an example where the UE (e.g., UE 120) performsoperations associated with determining discontinuous receptioncommunication parameters for sidelink communications.

As shown in FIG. 14 , in some aspects, process 1400 may includereceiving, from a second UE, discontinuous reception (DRX) configurationinformation, the DRX configuration information indicating a value for aDRX parameter, and the DRX configuration information indicating achannel busy ratio (CBR) configuration for the first UE (block 1410).For example, the UE (e.g., using reception component 1502, depicted inFIG. 15 ) may receive, from a second UE, discontinuous reception (DRX)configuration information, the DRX configuration information indicatinga value for a DRX parameter, and the DRX configuration informationindicating a channel busy ratio (CBR) configuration for the first UE, asdescribed above.

As further shown in FIG. 14 , in some aspects, process 1400 may includeconfiguring DRX using the DRX configuration information (block 1420).For example, the UE (e.g., using configuration component 1510, depictedin FIG. 15 ) may configure DRX using the DRX configuration information,as described above.

Process 1400 may include additional aspects, such as any single aspector any combination of aspects described below and/or in connection withone or more other processes described elsewhere herein.

In a first aspect, the DRX parameter comprises an offset parameterindicating a time gap between a beginning of a DRX cycle and an activemonitoring state of the DRX cycle.

In a second aspect, alone or in combination with the first aspect, theCBR configuration is one of a plurality of different types of CBRconfiguration.

In a third aspect, alone or in combination with one or more of the firstand second aspects, a first type of CBR configuration, of the differenttypes of CBR configuration, indicates that the first UE is to measure atleast one CBR metric during an active monitoring state of a DRX cycle,and wherein a second type of CBR configuration, of the different typesof CBR configuration, indicates that the first UE is to forego measuringthe at least one CBR metric during the active monitoring state of theDRX cycle.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the plurality of different types of CBRconfiguration include a plurality of a first CBR configurationindicating that one or more parameters for a communication between thefirst UE and the second UE are predetermined and independent of a CBRmetric associated with a set of resources used to transmit thecommunication, a second CBR configuration indicating that the one ormore parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredbased at least in part on the first UE receiving a sidelink WUS from thesecond UE, a third CBR configuration indicating that the one or moreparameters for the communication between the first UE and the second UEare to be based at least in part on measurements made during an activemonitoring state of a DRX cycle, and a fourth CBR configurationindicating that the one or more parameters for the communication betweenthe first UE and the second UE are to be based at least in part onmeasurements measured during a period of time prior to the activemonitoring state of the DRX cycle.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, process 1400 includes transmitting, to thesecond UE and based at least in part on the CBR configuration, at leastone CBR metric.

Although FIG. 14 shows example blocks of process 1400, in some aspects,process 1400 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 14 .Additionally, or alternatively, two or more of the blocks of process1400 may be performed in parallel.

FIG. 15 is a block diagram of an example apparatus 1500 for wirelesscommunication. The apparatus 1500 may be a UE, or a UE may include theapparatus 1500. In some aspects, the apparatus 1500 includes a receptioncomponent 1502 and a transmission component 1504, which may be incommunication with one another (for example, via one or more busesand/or one or more other components). As shown, the apparatus 1500 maycommunicate with another apparatus 1506 (such as a UE, a base station,or another wireless communication device) using the reception component1502 and the transmission component 1504. As further shown, theapparatus 1500 may include one or more of a communication component1508, or a configuration component 1510, among other examples.

In some aspects, the apparatus 1500 may be configured to perform one ormore operations described herein in connection with FIGS. 6-12 .Additionally, or alternatively, the apparatus 1500 may be configured toperform one or more processes described herein, such as process 1300 ofFIG. 13 , process 1400 of FIG. 14 , or a combination thereof. In someaspects, the apparatus 1500 and/or one or more components shown in FIG.15 may include one or more components of the UE described above inconnection with FIG. 2 . Additionally, or alternatively, one or morecomponents shown in FIG. 15 may be implemented within one or morecomponents described above in connection with FIG. 2 . Additionally, oralternatively, one or more components of the set of components may beimplemented at least in part as software stored in a memory. Forexample, a component (or a portion of a component) may be implemented asinstructions or code stored in a non-transitory computer-readable mediumand executable by a controller or a processor to perform the functionsor operations of the component.

The reception component 1502 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1506. The reception component1502 may provide received communications to one or more other componentsof the apparatus 1500. In some aspects, the reception component 1502 mayperform signal processing on the received communications (such asfiltering, amplification, demodulation, analog-to-digital conversion,demultiplexing, deinterleaving, de-mapping, equalization, interferencecancellation, or decoding, among other examples), and may provide theprocessed signals to the one or more other components of the apparatus1506. In some aspects, the reception component 1502 may include one ormore antennas, a demodulator, a MIMO detector, a receive processor, acontroller/processor, a memory, or a combination thereof, of the UEdescribed above in connection with FIG. 2 .

The transmission component 1504 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1506. In some aspects, one or moreother components of the apparatus 1506 may generate communications andmay provide the generated communications to the transmission component1504 for transmission to the apparatus 1506. In some aspects, thetransmission component 1504 may perform signal processing on thegenerated communications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1506. In some aspects, the transmission component 1504may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the UE described above in connection with FIG. 2. In some aspects, the transmission component 1504 may be co-locatedwith the reception component 1502 in a transceiver.

The communication component 1508 may determine, based at least in parton an indication of communication frequency between the first UE and asecond UE, a value for a discontinuous reception (DRX) parameter. Thetransmission component 1504 may transmit, to the second UE, DRXconfiguration information the DRX configuration information indicatingthe value for the DRX parameter.

The communication component 1508 may determine that the indication ofcommunication frequency is associated with a range of communicationfrequency of a plurality of ranges of communication frequency theplurality of ranges of communication frequency being associated withrespective values for the DRX parameter.

The reception component 1502 may receive, from a second UE,discontinuous reception (DRX) configuration information the DRXconfiguration information indicating a value for a DRX parameter, andthe DRX configuration information indicating a channel busy ratio (CBR)configuration for the first UE. The configuration component 1510 mayconfigure DRX using the DRX configuration information.

The transmission component 1504 may transmit, to the second UE and basedat least in part on the CBR configuration, at least one CBR metric.

The number and arrangement of components shown in FIG. 15 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 15 . Furthermore, two or more components shownin FIG. 15 may be implemented within a single component, or a singlecomponent shown in FIG. 15 may be implemented as multiple, distributedcomponents. Additionally, or alternatively, a set of (one or more)components shown in FIG. 15 may perform one or more functions describedas being performed by another set of components shown in FIG. 15 .

The following provides an overview of some Aspects of the presentdisclosure:

Aspect 1: A method of wireless communication performed by a first userequipment (UE), comprising: determining, based at least in part on anindication of communication frequency between the first UE and a secondUE, a value for a discontinuous reception (DRX) parameter; andtransmitting, to the second UE, DRX configuration information, the DRXconfiguration information indicating the value for the DRX parameter.

Aspect 2: The method of Aspect 1, wherein the DRX parameter comprises anoffset parameter indicating a time gap between a beginning of a DRXcycle and an active monitoring state of the DRX cycle.

Aspect 3: The method of any of Aspects 1 or 2, wherein the indication ofcommunication frequency comprises: a probability that the first UE willtransmit a communication to the second UE, or a channel occupancy ratio(CR) measurement.

Aspect 4: The method of any of Aspects 1-3, further comprising:determining that the indication of communication frequency is associatedwith a range of communication frequency of a plurality of ranges ofcommunication frequency, the plurality of ranges of communicationfrequency being associated with respective values for the DRX parameter;and wherein determining the value for the DRX parameter comprises:determining, as the value for the DRX parameter, a respective valueassociated with the range of communication frequency. whereindetermining the value for the DRX parameter comprises: determining, asthe value for the DRX parameter, a respective value associated with therange of communication frequency.

Aspect 5: The method of Aspect 4, wherein the range of communicationfrequency is higher than another range of communication frequency of theplurality of ranges of communication frequency, and wherein therespective value associated with the range of communication frequency ishigher than another respective value associated with the other range ofcommunication frequency.

Aspect 6: The method of Aspect 4, wherein a channel busy ratio (CBR)configuration for a communication between the first UE and the second UEindicates different types of CBR configuration for different ranges ofcommunication frequency.

Aspect 7: The method of Aspect 6, wherein a first type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to measure at least one CBR metric during an activemonitoring state of a DRX cycle, and wherein a second type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to forego measuring the at least one CBR metricduring the active monitoring state of the DRX cycle.

Aspect 8: The method of Aspect 6, wherein a first type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the second UE is to measure at least one CBR metric during anactive monitoring state of a DRX cycle, and wherein a second type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the second UE is to forego measuring the at least one CBR metricduring the active monitoring state of the DRX cycle.

Aspect 9: The method of any of Aspects 1-8, wherein the DRXconfiguration information includes data identifying one of a pluralityof different types of channel busy ratio (CBR) configurations.

Aspect 10: The method of Aspect 9, wherein the plurality of differenttypes of CBR configurations include a plurality of: a first CBRconfiguration indicating that one or more parameters for a communicationbetween the first UE and the second UE are predetermined and independentof a CBR metric associated with a set of resources used to transmit thecommunication, a second CBR configuration indicating that the one ormore parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredbased at least in part on the first UE transmitting a sidelink wake-upsignal (WUS) to the second UE, a third CBR configuration indicating thatthe one or more parameters for the communication between the first UEand the second UE are to be based at least in part on measurements madeduring an active monitoring state of a DRX cycle, and a fourth CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured during a period of time prior tothe active monitoring state of the DRX cycle.

Aspect 11: The method of any of Aspects 1-10, wherein the first UEdynamically updates the value for the DRX parameter based at least inpart on an updated indication of communication frequency.

Aspect 12: A method of wireless communication performed by a first userequipment (UE), comprising: receiving, from a second UE, discontinuousreception (DRX) configuration information, the DRX configurationinformation indicating a value for a DRX parameter, and the DRXconfiguration information indicating a channel busy ratio (CBR)configuration for the first UE; and configuring DRX using the DRXconfiguration information.

Aspect 13: The method of Aspect 12, wherein the DRX parameter comprisesan offset parameter indicating a time gap between a beginning of a DRXcycle and an active monitoring state of the DRX cycle.

Aspect 14: The method of any of Aspects 12 or 13, wherein the CBRconfiguration is one of a plurality of different types of CBRconfiguration.

Aspect 15: The method of Aspect 14, wherein a first type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to measure at least one CBR metric during an activemonitoring state of a DRX cycle, and wherein a second type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to forego measuring the at least one CBR metricduring the active monitoring state of the DRX cycle.

Aspect 16: The method of Aspect 14, wherein the plurality of differenttypes of CBR configuration include a plurality of: a first CBRconfiguration indicating that one or more parameters for a communicationbetween the first UE and the second UE are predetermined and independentof a CBR metric associated with a set of resources used to transmit thecommunication, a second CBR configuration indicating that the one ormore parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredbased at least in part on the first UE receiving a sidelink wake-upsignal (WUS) from the second UE, a third CBR configuration indicatingthat the one or more parameters for the communication between the firstUE and the second UE are to be based at least in part on measurementsmade during an active monitoring state of a DRX cycle, and a fourth CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured during a period of time prior tothe active monitoring state of the DRX cycle.

Aspect 17: The method of any of Aspects 12-16, further comprising:transmitting, to the second UE and based at least in part on the CBRconfiguration, at least one CBR metric.

Aspect 18: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more Aspects ofAspects 1-11.

Aspect 19: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more Aspects ofAspects 12-17.

Aspect 20: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to perform the method of one or more Aspectsof Aspects 1-11.

Aspect 21: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to perform the method of one or more Aspectsof Aspects 12-17.

Aspect 22: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more Aspects of Aspects1-11.

Aspect 23: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more Aspects of Aspects12-17.

Aspect 24: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more Aspects of Aspects 1-11.

Aspect 25: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more Aspects of Aspects 12-17.

Aspect 26: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore Aspects of Aspects 1-11.

Aspect 27: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore Aspects of Aspects 12-17.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseforms disclosed. Modifications and variations may be made in light ofthe above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware and/or a combination of hardware and software. “Software”shall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,and/or functions, among other examples, whether referred to as software,firmware, middleware, microcode, hardware description language, orotherwise. As used herein, a processor is implemented in hardware and/ora combination of hardware and software. It will be apparent that systemsand/or methods described herein may be implemented in different forms ofhardware and/or a combination of hardware and software. The actualspecialized control hardware or software code used to implement thesesystems and/or methods is not limiting of the aspects. Thus, theoperation and behavior of the systems and/or methods were describedherein without reference to specific software code—it being understoodthat software and hardware can be designed to implement the systemsand/or methods based, at least in part, on the description herein.

As used herein, satisfying a threshold may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, or thelike.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. As used herein, a phrase referringto “at least one of” a list of items refers to any combination of thoseitems, including single members. As an example, “at least one of: a, b,or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well asany combination with multiples of the same element (e.g., a-a, a-a-a,a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or anyother ordering of a, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems and may be used interchangeably with “one or more.” Further, asused herein, the article “the” is intended to include one or more itemsreferenced in connection with the article “the” and may be usedinterchangeably with “the one or more.” Furthermore, as used herein, theterms “set” and “group” are intended to include one or more items (e.g.,related items, unrelated items, or a combination of related andunrelated items), and may be used interchangeably with “one or more.”Where only one item is intended, the phrase “only one” or similarlanguage is used. Also, as used herein, the terms “has,” “have,”“having,” or the like are intended to be open-ended terms. Further, thephrase “based on” is intended to mean “based, at least in part, on”unless explicitly stated otherwise. Also, as used herein, the term “or”is intended to be inclusive when used in a series and may be usedinterchangeably with “and/or,” unless explicitly stated otherwise (e.g.,if used in combination with “either” or “only one of”).

What is claimed is:
 1. A first user equipment (UE) for wirelesscommunication, comprising: a memory; and one or more processors, coupledto the memory, configured to: determine, based at least in part on anindication of communication frequency between the first UE and a secondUE, a value for a discontinuous reception (DRX) parameter; and transmit,to the second UE, DRX configuration information, the DRX configurationinformation indicating: (i) the value for the DRX parameter and (ii) achannel busy ratio (CBR) configuration indicating when CBR measurementis performed during DRX.
 2. The first UE of claim 1, wherein the DRXparameter comprises an offset parameter indicating a time gap between abeginning of a DRX cycle and an active monitoring state of the DRXcycle.
 3. The first UE of claim 1, wherein the indication ofcommunication frequency comprises: a probability that the first UE willtransmit a communication to the second UE, or a channel occupancy ratio(CR) measurement.
 4. The first UE of claim 1, wherein the one or moreprocessors are further configured to: determine that the indication ofcommunication frequency is associated with a range of communicationfrequency of a plurality of ranges of communication frequency, theplurality of ranges of communication frequency being associated withrespective values for the DRX parameter; and wherein the one or moreprocessors, to determine the value for the DRX parameter, are configuredto: determine, as the value for the DRX parameter, a respective valueassociated with the range of communication frequency.
 5. The first UE ofclaim 4, wherein the range of communication frequency is higher thananother range of communication frequency of the plurality of ranges ofcommunication frequency, and wherein the respective value associatedwith the range of communication frequency is higher than anotherrespective value associated with the other range of communicationfrequency.
 6. The first UE of claim 4, wherein the CBR configuration fora communication between the first UE and the second UE indicatesdifferent types of CBR configuration for different ranges ofcommunication frequency.
 7. The first UE of claim 6, wherein a firsttype of CBR configuration, of the different types of CBR configuration,indicates that the first UE is to measure at least one CBR metric duringan active monitoring state of a DRX cycle, and wherein a second type ofCBR configuration, of the different types of CBR configuration,indicates that the first UE is to forego measuring the at least one CBRmetric during the active monitoring state of the DRX cycle.
 8. The firstUE of claim 6, wherein a first type of CBR configuration, of thedifferent types of CBR configuration, indicates that the second UE is tomeasure at least one CBR metric during an active monitoring state of aDRX cycle, and wherein a second type of CBR configuration, of thedifferent types of CBR configuration, indicates that the second UE is toforego measuring the at least one CBR metric during the activemonitoring state of the DRX cycle.
 9. The first UE of claim 1, whereinthe DRX configuration information includes data identifying one of aplurality of different types of CBR configurations.
 10. The first UE ofclaim 9, wherein the plurality of different types of CBR configurationsinclude a plurality of: a first CBR configuration indicating that one ormore parameters for a communication between the first UE and the secondUE are predetermined and independent of a CBR metric associated with aset of resources used to transmit the communication, a second CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured based at least in part on thefirst UE transmitting a sidelink wake-up signal (WUS) to the second UE,a third CBR configuration indicating that the one or more parameters forthe communication between the first UE and the second UE are to be basedat least in part on measurements made during an active monitoring stateof a DRX cycle, and a fourth CBR configuration indicating that the oneor more parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredduring a period of time prior to the active monitoring state of the DRXcycle.
 11. The first UE of claim 1, wherein the first UE dynamicallyupdates the value for the DRX parameter based at least in part on anupdated indication of communication frequency.
 12. A first userequipment (UE) for wireless communication, comprising: a memory; and oneor more processors, coupled to the memory, configured to: receive, froma second UE, discontinuous reception (DRX) configuration information,the DRX configuration information indicating a value for a DRXparameter, and the DRX configuration information indicating a channelbusy ratio (CBR) configuration for the first UE, the CBR configurationindicating when CBR measurement is performed during DRX; and configureDRX using the DRX configuration information.
 13. The first UE of claim12, wherein the DRX parameter comprises an offset parameter indicating atime gap between a beginning of a DRX cycle and an active monitoringstate of the DRX cycle.
 14. The first UE of claim 12, wherein the CBRconfiguration is one of a plurality of different types of CBRconfiguration.
 15. The first UE of claim 14, wherein a first type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to measure at least one CBR metric during an activemonitoring state of a DRX cycle, and wherein a second type of CBRconfiguration, of the different types of CBR configuration, indicatesthat the first UE is to forego measuring the at least one CBR metricduring the active monitoring state of the DRX cycle.
 16. The first UE ofclaim 14, wherein the plurality of different types of CBR configurationinclude a plurality of: a first CBR configuration indicating that one ormore parameters for a communication between the first UE and the secondUE are predetermined and independent of a CBR metric associated with aset of resources used to transmit the communication, a second CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured based at least in part on thefirst UE receiving a sidelink wake-up signal (WUS) from the second UE, athird CBR configuration indicating that the one or more parameters forthe communication between the first UE and the second UE are to be basedat least in part on measurements made during an active monitoring stateof a DRX cycle, and a fourth CBR configuration indicating that the oneor more parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredduring a period of time prior to the active monitoring state of the DRXcycle.
 17. The first UE of claim 12, wherein the one or more processorsare further configured to: transmit, to the second UE and based at leastin part on the CBR configuration, at least one CBR metric.
 18. A methodof wireless communication performed by a first user equipment (UE),comprising: determining, based at least in part on an indication ofcommunication frequency between the first UE and a second UE, a valuefor a discontinuous reception (DRX) parameter; and transmitting, to thesecond UE, DRX configuration information, the DRX configurationinformation indicating: (i) the value for the DRX parameter and (ii) achannel busy ratio (CBR) configuration indicating when CBR measurementis performed during DRX.
 19. The method of claim 18, wherein the DRXparameter comprises an offset parameter indicating a time gap between abeginning of a DRX cycle and an active monitoring state of the DRXcycle.
 20. The method of claim 18, wherein the indication ofcommunication frequency comprises: a probability that the first UE willtransmit a communication to the second UE, or a channel occupancy ratio(CR) measurement.
 21. The method of claim 18, further comprising:determining that the indication of communication frequency is associatedwith a range of communication frequency of a plurality of ranges ofcommunication frequency, the plurality of ranges of communicationfrequency being associated with respective values for the DRX parameter;and wherein determining the value for the DRX parameter comprises:determining, as the value for the DRX parameter, a respective valueassociated with the range of communication frequency.
 22. The method ofclaim 21, wherein the range of communication frequency is higher thananother range of communication frequency of the plurality of ranges ofcommunication frequency, and wherein the respective value associatedwith the range of communication frequency is higher than anotherrespective value associated with the other range of communicationfrequency.
 23. The method of claim 21, wherein the CBR configuration fora communication between the first UE and the second UE indicatesdifferent types of CBR configuration for different ranges ofcommunication frequency.
 24. The method of claim 18, wherein the DRXconfiguration information includes data identifying one of a pluralityof different types of CBR configurations.
 25. The method of claim 24,wherein the plurality of different types of CBR configurations include aplurality of: a first CBR configuration indicating that one or moreparameters for a communication between the first UE and the second UEare predetermined and independent of a CBR metric associated with a setof resources used to transmit the communication, a second CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured based at least in part on thefirst UE transmitting a sidelink wake-up signal (WUS) to the second UE,a third CBR configuration indicating that the one or more parameters forthe communication between the first UE and the second UE are to be basedat least in part on measurements made during an active monitoring stateof a DRX cycle, and a fourth CBR configuration indicating that the oneor more parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredduring a period of time prior to the active monitoring state of the DRXcycle.
 26. The method of claim 18, further comprising: dynamicallyupdating the value for the DRX parameter based at least in part on anupdated indication of communication frequency.
 27. A method of wirelesscommunication performed by a first user equipment (UE), comprising:receiving, from a second UE, discontinuous reception (DRX) configurationinformation, the DRX configuration information indicating a value for aDRX parameter, and the DRX configuration information indicating achannel busy ratio (CBR) configuration for the first UE, the CBRconfiguration indicating when CBR measurement is performed during DRX;and configuring DRX using the DRX configuration information.
 28. Themethod of claim 27, wherein the DRX parameter comprises an offsetparameter indicating a time gap between a beginning of a DRX cycle andan active monitoring state of the DRX cycle.
 29. The method of claim 27,wherein the CBR configuration is one of a plurality of different typesof CBR configuration, wherein a first type of CBR configuration, of thedifferent types of CBR configuration, indicates that the first UE is tomeasure at least one CBR metric during an active monitoring state of aDRX cycle, and wherein a second type of CBR configuration, of thedifferent types of CBR configuration, indicates that the first UE is toforego measuring the at least one CBR metric during the activemonitoring state of the DRX cycle.
 30. The method of claim 27, whereinthe CBR configuration is one of a plurality of different types of CBRconfiguration, and wherein the plurality of different types of CBRconfiguration include a plurality of: a first CBR configurationindicating that one or more parameters for a communication between thefirst UE and the second UE are predetermined and independent of a CBRmetric associated with a set of resources used to transmit thecommunication, a second CBR configuration indicating that the one ormore parameters for the communication between the first UE and thesecond UE are to be based at least in part on measurements measuredbased at least in part on the first UE receiving a sidelink wake-upsignal (WUS) from the second UE, a third CBR configuration indicatingthat the one or more parameters for the communication between the firstUE and the second UE are to be based at least in part on measurementsmade during an active monitoring state of a DRX cycle, and a fourth CBRconfiguration indicating that the one or more parameters for thecommunication between the first UE and the second UE are to be based atleast in part on measurements measured during a period of time prior tothe active monitoring state of the DRX cycle.